Pump-valve mechanism.



PATENTED AUG. 13, 1907.

11. SHBEN. PUMP VALVE MBGHANISM.

APPLICATION FILED APB.10,1906.

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NITED DAVIS SHEEN, OF SONORA, TEXAS.

PUMP-VALVE ME CHANISM.

Specification of Letters Patent.

Patented Aug. 13, 1907.

Application led April 10,1906. Serial No. 310,916.

' To all whom it may concern:

Be it known that DAvIs SHEEN, a citizen of the United States, residing at Sonora, in the county of Sutton and State ol Texas, has invented a new and useful Pump- Valve Mechanism, oi which the following is a specification.

This invention relates more particularly to valve mechanism for deep well pumps, though clearly applicable for use in other relations.

The principal object is to provide novel mechanism of the above character, which is very durable, is not liable to become leaky, deranged or inoperative, can be readily withdrawn as a whole from the well, and has the parts so constructed and arranged that they may be easily inspected, disassociated and replaced, it these operations should be found necessary or desirable.

The preferred embodiment of the invention is illustrated in the accompanying drawings, wherein,

Figure l is a side elevation of the mechanism. Fig. 2 is a longitudinal sectional view through the same.

Similar reference numerals designate corresponding parts in all the iigures of the drawings.

In the embodiment illustrated, an upper valve structure 3, and a lower valve structure 4 are employed, the upper structure constituting the plunger of the pump, as will be readily understood. These structures are employed in the ordinary pump cylinder (not shown). The said upper valve structure comprises a head member in the form of a yoke 5, having at its lower end a collar 6. The yoke 5 hasan upstanding nipple 7, to which is threaded the usual tubular plunger rod 8. The upper end of the collar 6, inside the yoke, constitutes a valve seat 9, and the bore of said collar forms a passageway for the water or other liquid pumped. A tubular sleeve 11 depends from the head member, and is preierably threaded into the collar (3, though it may be connected in any suitable manner` This sleeve is openended, and has packing mounted on its exterior. Said packing comprises cups 12 of yielding material, such as leather, with an interposed washer 13, the cups and Washer being detachable from the lower end of the sleeve l1, and being abutted against the lower end of the head member. A tubular guide stem 14 has its upper end threaded into the yoke, said guide stem extending through the passageway 10, and the sleeve 11, and being spaced from all the walls thereof. This guide stem has an annular abutment enlargement 15, the upper face of which is Hush with the valve seat 9. A valve 16, which may be of any suitable material, but preterably of leather or rubber disk sections, is slidably mounted on the guide stem 14 within the yoke, and above the abutment, said valve being movable into and out of engagement with the said seat 9, and upper side of the abutment. A clamping device completes the upper valve structure, said device comprising a collar 17 slidably mounted on the lower end of the sleeve 11. and a yoke 18 Connected to the collar, and slidably engaged with the lower end of the tubular valve stem 14, aholding nut 19, threaded upon the lower end of said stem, engaging the yoke, and thereby maintaining the packing device in position.

The lower valve structure is very similar to that above described. A head member is employed comprising a collar 20, having an upstanding yoke 2l, provided with spaced cross arms 22 and 23. The top of the collar constitutes a valve seat 24. Depending trom said collar is a sleeve 25, upon which is arranged a packing cup 2G. A guide stem 27 has its upper end threaded into the cross arm 23 of the yoke, said stem extending downwardly through the passageway ot the collar and through the sleeve 25, being spaced from the various walls thereof. It is provided with an abutment enlargement 28, the upper face oi which is substantially flush with the valve seat 24. A valve 29 is slidably mounted on the stem, and is movable into and out oi engagement with the valve seat 24, and the abutment 28. The packing cup 26 is held in position by a clamping member comprising a collar 30, disposed below and slidably mounted on the lower portion oi the sleeve 25. This collar carries a depending yoke 31, slidably mounted on the lower portion of the stem, and held in position by a nut 32 threaded on said stem.

The upper and lower structures are connected by a rod 33, which rod is preferably threaded into the upper cross bar 22 of the yoke 21, and is held against turning by a pin 34. The connecting rod extends through the tubular guide stem 14, which is slidable upon it, and said rod has a head 35 at its upper end arranged to abut against the nipple 7 or the upper end of the stem 14, as desired.

It will be apparent that this mechanism may be entirely associated and lowered as a whole into the well. The lower valve structure seats itself in a manner well understood. In the pumping operation, the upper valve structure reciprocates on the connecting rod 33. To withdraw the mechanism from the well, it is only necessary to elevate the plunger rod 8, whereupon the entire structure will be withdrawn. There are other advantages for the structure disclosed. By employing the central guide stem, a flat valve may be used, and as this guide stem has no connections with the head member at the valve seat, an annular unobstructed passageway oi comparatively great area is secured. At the same time, the valve has its peripheral and central portions supported when seated, and no matter how much the valve may be turned, or rotated upon the stem, it will properly seat itself. The advantage of this will be apparent when it is considered that where cross arms are employed, these cross arms wear radial grooves in the valve, and it the valve is turned,

said grooves form channels through which the waterleaks. The stems, besides constituting guides and abutments for the valves, also provide supports or the clamping members, eliminating the necessity of threading the lower ends ofthe sleeves, and consequently permitting the packing to be slipped onto and ofi the same without diiliculty when the clamping members are removed. The stem in the upper valve structure, moreover, performs still another function, in that it constitutes an extended guide operating on the rod 33. It will be apparent from an inspection oi Fig. 2 of the drawings that the various parts are exceedingly simple, that they can be readily assembled, inspected and disassociated. Moreover, by having both valve structures connected in the manner described, the mechanism can be easily inserted or removed irom the well.

From the foregoing it is thought that the construction, operation and many advantages oi the herein described invention will be apparent to those skilled in the art, without further description, and it will be apparent that various changes in the size, shape, proportion, and minor details oi construction, may be resorted to without departing from the spirit or sacrificing any of the advantages of the invention.

Having thus iully described my invention, what I claim as new, and desire to secure by Letters Patent, is:-

l. In mechanism of the character described, the combination with an, upper Valve structure including a head member having a depending sleeve, the bore of said sleeve constituting a passageway, of a stem depending from the head member through the bore of the sleeve in spaced relation to the walls thereof, packing mounted on the exterior of the sleeve, a clamping device mounted on the stem and engaging the packing on the sleeve to maintain the same thereon, said device permitting the flow of liquid through the sleeve, and a lower valve structure suspended from the guide and having a movable connection therewith.

2. In mechanism of the character described, the combination with an upper valve structure including a head member having a conduit, of a `stem depending into the conduit in spaced relation to the walls thereof, a valve movably mounted on the stem and controlling` the passage of liquid through the conduit, packing surrounding the conduit, retaining means for the packing mounted on the stem, and a lower valve structure having a movable connection with the stein.

3. In mechanism of the character described, the combination with a head member having a passageway, and a valve seat surrounding the same, of a sleeve depending from the head member, a stem extending through the passageway and the sleeve, packing mounted on the sleeve, a clamping device mounted on the stem and slidably engaging the sleeve to maintain the packing thereon, and a valve slidably mounted on the stem and coacting with the valve seat of the head member.

4. In mechanism of the character described, the combination with a head member comprising a yoke having a collar, the upper end of said collar constituting a valve scat, oi a sleeve depending from the collar, packing slid ably mounted on the sleeve, a stem carried by the yoke and extending through the passageway and sleeve, a clamping yoke slidably mounted on the stem and having a collar slidably mounted on the sleeve, a holding device mounted on the stem and engaging the yoke of the clamping device, an abutment carried by the stem, and a valve slidably mounted on the stem and movable into and out or" engagement witlrthe valve seat of the head member and the abutment of the stem.

5. An upper valve structure, comprising a head member having a passageway, a valve seat surrounding the same, a tubular guide stem secured to the head member and extending through the passageway in spaced relation te the walls thereof, and a valve slidable on the exterior oi' the stem and coacting with the valve seat to control the passage of liquid through the passageway, in combination with a lower valve structure, and a connection between the upper and lower valve structures, said connection passing through the tubular stem of the upper structure, and said stem being slidable thereon.

(5. An upper valve structure, comprising a head member having a depending sleeve, a tubular stem depending from the head member and extending through the sleeve, packing mounted on the sleeve, a clamping device mounted on the stem and sleeve and engaging the packing, in combination with a lower valve structure, and a connecting rod secured thereto, said rod slidably passing through the stem and having a head at its upper end.

'i'A An upper valve structure, comprising a head member composed of a yoke, and a collar, a sleeve depending from the collar, packing mounted on the sleeve, a valve seat. formed upon the collar, a guide stem depending from the yoke and extending through the sleeve, said guide stem having an abutment, a valve slidably mounted on the stem and movable into and out ot engagement with the abut ment and the seat, a clamping device comprising a yoke slidably mounted on the stem and a collar slidably mounted on the sleeve and engaging the packing, in combination with a lower valve structure comprising a .yoke having a valve seat, a sleeve depending from the yoke, a guide stem depending from the yoke and extending through the sleeve, said stem having an abutment, a valve slidably mounted on the stem and coacting with the valve seat and abutment, packing mounted on -the sleeve, and a clamping device secured to the lower' end of the stem and engaging the sleeve and packing thereon, and a connecting rod secured to the upper yoke of the lower valve structure and slidably passing through the stem of the upper valve structure, said rod having a head at its upper end.

In testimony, that I claim the foregoing as my own, I have hereto allxed my signature in the presence of two witnesses.

DAVIS SHEEN.

Witnesses E. S. BRIANT, I-I. A. YoAs. 

